CompTIA Network+

Answer: A - The Mesh topology is the most difficult to manage and is the least easily scalable.

Key Takeaway: With the mesh topology, each node is connected to every other node in the network. Because of this, with each new node that is to be added, there are an increasing number of connections that must be added as well. For example, if we have 4 computers in a mesh topology configuration, then we have 12 connections. When we add a 5^th computer the number of connections goes up to 20, with a 6^ththe number increases to 30. This also leads to difficulty in management, especially compared to the ring, tree, and bus topologies which are relatively easy to manage.